[Emms-patches] New branch "typos-fix"

[Tim Landscheidt]

Hi,

over the last week I have read every line of every file of
EMMS. In the course of that, I corrected many typos, adjust-
ed the spacing to "(setq sentence-end-double-space t
fill-column 70)", and threw in a couple of "TODO:"s and
"FIXME:"s when I noticed something that didn't look right.

  I committed the result to the new branch "typos-fix". As
this is another scratchpad with many back-and-forth commits;
the idea is, over time, to transfer changes per file to mas-
ter and then merge master into typos-fix (until hopefully
'[ -z "$(git diff master..typos-fix)" ]').

  A large chunk of the changes concerns emms.texinfo. I have
checked for every keyword, whether @code{}, @command{},
etc. is appropriate, and tried to present a /consistent/
overall picture to the reader. This work is not done yet - I
still have to check the @xref{}s, @pxrefs{}s & Co. and
proofread the resulting info and PDF files. Once this is
finished, I will ask here for reviews.

Tim